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workplace. e goal of this stage is to implement a suciently high and uniformly distributed illuminance that meets the design level. e lumen method is the simplest and most commonly used method to calculate the average illuminance and the number of lamps that should be installed for a given space. In cases that can?t be covered by the lumen method (such as machinery rooms having complex structures and arrangements, or outdoor areas such as upper decks and pas -sageways), lighting design software is used. Installation and verification. Once the drawings for lighting are approved by the class society, they are released to the installer. After finishing the installation, normally immediately following sea tri -als, all parties?owner, quality assurance team, designer, and installer?concerned with the lighting conduct lighting tests with a lux meter. If there are any problems with the level of illumination, additional instal -lations or replacements of luminaries are carried out as soon as the test is nished. Simulation in maritime applications Lighting simulation often is conducted in projects such as architectural or interior lighting, road lighting, and exterior lighting. In the case of marine applications, simulation is usually applied to working vessels such as drillships, oating production storage and ooading vessels, eld development ships (FDS), and cruise vessels. Lighting software has become an important tool in modern lighting designs as it provides accurate calcu -lation results and realistic rendering to verify and complement the design. Some of the more commonly used light -ing simulation tools are Relux, DIALux, AGI32, and Lumen-Micro. Because there?s not much difference in the calculation results between the tools (and because they oer similar functionality), the light -ing engineer should choose the software according to the purpose of the simulation. As indicated earlier, lighting design for simple rectangular spaces is carried out by using the lumen method, and in some cases that needs to be calculated more accurately by applying lighting software. Samsung Heavy Industries (SHI) normally uses Relux and DIALux, which are free but powerful tools, although sometimes we use a specic tool chosen by a ship owner for a certain project. Simulation software results can pres -ent a variety of useful information for the lighting design process, including distribu -tion, contour, uniformity, and average light in given conditions such as reection fac -tor, structure, and work plane. is enables the initial lighting design to approach the optimal design through repeating the sim -ulation and modication. In addition to the commercial products, SHI has its own simulation tool, Samsung illuminance calculation on deck (SICOD), which was developed to simulate lighting for open spaces such as upper decks and passageways. In the case of an enclosed space, relatively high levels of illuminance may appear at a certain position due to the fact that it is a mixed result, compris -ing both direct and indirect components reected from wall, oor, ceiling, and so forth. However, there are no reections for open (outdoor) spaces. Because of this, the lumen method is not applicable to outdoor spaces. SICOD was developed to cover this problem and is commonly used for com -mercial ships. In 2011, SHI had an opportunity to introduce, verify, and validate our lighting simulation capability though the application of the American Bureau of Shipping (ABS) en-USJuly 2012 en-US en-USwww.sname.org/sname/mt Simulation is usually applied to working vessels such as drillships, oating production storage and ooading vessels, eld development ships (FDS), and cruise vessels.